another night at the bar...

ok so tonight i was working and this guy walks in and he’s all like “hey bartender can i get a drink” but i already knew him from before, we kind of have this weird semi-friend thing going on. anyways, he comes over and just starts talking about how much he likes me and it was really awkward because yeah there are times when i think about him too but not in that way at all, more like “oh man why is this guy always around” type stuff. so then i end up accidentally saying something that made it sound like i might be interested back and now i’m just sitting here thinking maybe i did the wrong thing? what if he thinks we’re going to start talking again or something but honestly there’s no way i want a romantic relationship with this guy, i barely know him. so anyone think this is normal? should i text him and say “hey sorry for that mixup” or just let it go?